Scott, There were issues with GRO and routing in the initial implementations (2.6.29 I think was where GRO was introduced). Try newer kernel (2.6.32.x) and it should work.
Thanks, Emil -----Original Message----- From: Scott Silverman [mailto:ssilver...@simplexinvestments.com] Sent: Wednesday, December 23, 2009 12:30 PM To: e1000-devel@lists.sourceforge.net Subject: Re: [E1000-devel] Issue with GRO on IGB in Linux Router I would like to made a few more additions, as some things were brought to my attention. First, I was informed that a newer version of ethtool is required to support gro, I now see that gro was indeed present, and default on, in 2.0.6 (though not in 1.3.19.3). Second, I am attaching the lspci -v output below. Thanks, Scott <lspci -v> # lspci -v 00:00.0 Host bridge: Intel Corporation 5520 I/O Hub to ESI Port (rev 13) Subsystem: Super Micro Computer Inc Unknown device 0400 Flags: fast devsel Capabilities: [60] Message Signalled Interrupts: 64bit- Queue=0/1 Enable- Capabilities: [90] Express Root Port (Slot-) IRQ 0 Capabilities: [e0] Power Management version 3 00:01.0 PCI bridge: Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port 1 (rev 13) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=01, subordinate=01, sec-latency=0 I/O behind bridge: 00003000-00003fff Memory behind bridge: fbc00000-fbcfffff Capabilities: [40] #0d [0000] Capabilities: [60] Message Signalled Interrupts: 64bit- Queue=0/1 Enable+ Capabilities: [90] Express Root Port (Slot+) IRQ 0 Capabilities: [e0] Power Management version 3 00:03.0 PCI bridge: Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port 3 (rev 13) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=02, subordinate=05, sec-latency=0 I/O behind bridge: 00004000-00005fff Memory behind bridge: f8f00000-fabfffff Capabilities: [40] #0d [0000] Capabilities: [60] Message Signalled Interrupts: 64bit- Queue=0/1 Enable+ Capabilities: [90] Express Root Port (Slot+) IRQ 0 Capabilities: [e0] Power Management version 3 00:05.0 PCI bridge: Intel Corporation 5520/X58 I/O Hub PCI Express Root Port 5 (rev 13) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=06, subordinate=06, sec-latency=0 Capabilities: [40] #0d [0000] Capabilities: [60] Message Signalled Interrupts: 64bit- Queue=0/1 Enable+ Capabilities: [90] Express Root Port (Slot+) IRQ 0 Capabilities: [e0] Power Management version 3 00:07.0 PCI bridge: Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port 7 (rev 13) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=07, subordinate=07, sec-latency=0 I/O behind bridge: 00006000-00006fff Memory behind bridge: fbd00000-fbdfffff Prefetchable memory behind bridge: 00000000f4000000-00000000f5f00000 Capabilities: [40] #0d [0000] Capabilities: [60] Message Signalled Interrupts: 64bit- Queue=0/1 Enable+ Capabilities: [90] Express Root Port (Slot+) IRQ 0 Capabilities: [e0] Power Management version 3 00:09.0 PCI bridge: Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port 9 (rev 13) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=08, subordinate=08, sec-latency=0 Capabilities: [40] #0d [0000] Capabilities: [60] Message Signalled Interrupts: 64bit- Queue=0/1 Enable+ Capabilities: [90] Express Root Port (Slot+) IRQ 0 Capabilities: [e0] Power Management version 3 00:13.0 PIC: Intel Corporation 5520/5500/X58 I/O Hub I/OxAPIC Interrupt Controller (rev 13) (prog-if 20 [IO(X)-APIC]) Flags: bus master, fast devsel, latency 0 Memory at fec8a000 (32-bit, non-prefetchable) [size=4K] Capabilities: [6c] Power Management version 3 00:14.0 PIC: Intel Corporation 5520/5500/X58 I/O Hub System Management Registers (rev 13) (prog-if 00 [8259]) Flags: fast devsel Capabilities: [40] Express Unknown type IRQ 0 00:14.1 PIC: Intel Corporation 5520/5500/X58 I/O Hub GPIO and Scratch Pad Registers (rev 13) (prog-if 00 [8259]) Flags: fast devsel Capabilities: [40] Express Unknown type IRQ 0 00:14.2 PIC: Intel Corporation 5520/5500/X58 I/O Hub Control Status and RAS Registers (rev 13) (prog-if 00 [8259]) Flags: fast devsel Capabilities: [40] Express Unknown type IRQ 0 00:14.3 PIC: Intel Corporation 5520/5500/X58 I/O Hub Throttle Registers (rev 13) (prog-if 00 [8259]) Flags: fast devsel 00:16.0 System peripheral: Intel Corporation 5520/5500/X58 Chipset QuickData Technology Device (rev 13) Subsystem: Super Micro Computer Inc Unknown device 0400 Flags: bus master, fast devsel, latency 0, IRQ 10 Memory at fbef8000 (64-bit, non-prefetchable) [size=16K] Capabilities: [80] MSI-X: Enable- Mask- TabSize=1 Capabilities: [90] Express Unknown type IRQ 0 Capabilities: [e0] Power Management version 3 00:16.1 System peripheral: Intel Corporation 5520/5500/X58 Chipset QuickData Technology Device (rev 13) Subsystem: Super Micro Computer Inc Unknown device 0400 Flags: bus master, fast devsel, latency 0, IRQ 15 Memory at fbef4000 (64-bit, non-prefetchable) [size=16K] Capabilities: [80] MSI-X: Enable- Mask- TabSize=1 Capabilities: [90] Express Unknown type IRQ 0 Capabilities: [e0] Power Management version 3 00:16.2 System peripheral: Intel Corporation 5520/5500/X58 Chipset QuickData Technology Device (rev 13) Subsystem: Super Micro Computer Inc Unknown device 0400 Flags: bus master, fast devsel, latency 0, IRQ 14 Memory at fbef0000 (64-bit, non-prefetchable) [size=16K] Capabilities: [80] MSI-X: Enable- Mask- TabSize=1 Capabilities: [90] Express Unknown type IRQ 0 Capabilities: [e0] Power Management version 3 00:16.3 System peripheral: Intel Corporation 5520/5500/X58 Chipset QuickData Technology Device (rev 13) Subsystem: Super Micro Computer Inc Unknown device 0400 Flags: bus master, fast devsel, latency 0, IRQ 11 Memory at fbeec000 (64-bit, non-prefetchable) [size=16K] Capabilities: [80] MSI-X: Enable- Mask- TabSize=1 Capabilities: [90] Express Unknown type IRQ 0 Capabilities: [e0] Power Management version 3 00:16.4 System peripheral: Intel Corporation 5520/5500/X58 Chipset QuickData Technology Device (rev 13) Subsystem: Super Micro Computer Inc Unknown device 0400 Flags: bus master, fast devsel, latency 0, IRQ 10 Memory at fbee8000 (64-bit, non-prefetchable) [size=16K] Capabilities: [80] MSI-X: Enable- Mask- TabSize=1 Capabilities: [90] Express Unknown type IRQ 0 Capabilities: [e0] Power Management version 3 00:16.5 System peripheral: Intel Corporation 5520/5500/X58 Chipset QuickData Technology Device (rev 13) Subsystem: Super Micro Computer Inc Unknown device 0400 Flags: bus master, fast devsel, latency 0, IRQ 15 Memory at fbee4000 (64-bit, non-prefetchable) [size=16K] Capabilities: [80] MSI-X: Enable- Mask- TabSize=1 Capabilities: [90] Express Unknown type IRQ 0 Capabilities: [e0] Power Management version 3 00:16.6 System peripheral: Intel Corporation 5520/5500/X58 Chipset QuickData Technology Device (rev 13) Subsystem: Super Micro Computer Inc Unknown device 0400 Flags: bus master, fast devsel, latency 0, IRQ 14 Memory at fbee0000 (64-bit, non-prefetchable) [size=16K] Capabilities: [80] MSI-X: Enable- Mask- TabSize=1 Capabilities: [90] Express Unknown type IRQ 0 Capabilities: [e0] Power Management version 3 00:16.7 System peripheral: Intel Corporation 5520/5500/X58 Chipset QuickData Technology Device (rev 13) Subsystem: Super Micro Computer Inc Unknown device 0400 Flags: bus master, fast devsel, latency 0, IRQ 11 Memory at fbedc000 (64-bit, non-prefetchable) [size=16K] Capabilities: [80] MSI-X: Enable- Mask- TabSize=1 Capabilities: [90] Express Unknown type IRQ 0 Capabilities: [e0] Power Management version 3 00:1a.0 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #4 (prog-if 00 [UHCI]) Subsystem: Super Micro Computer Inc Unknown device 0400 Flags: bus master, medium devsel, latency 0, IRQ 16 I/O ports at 1c00 [size=32] Capabilities: [50] #13 [0306] 00:1a.1 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #5 (prog-if 00 [UHCI]) Subsystem: Super Micro Computer Inc Unknown device 0400 Flags: bus master, medium devsel, latency 0, IRQ 21 I/O ports at 1880 [size=32] Capabilities: [50] #13 [0306] 00:1a.7 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB2 EHCI Controller #2 (prog-if 20 [EHCI]) Subsystem: Super Micro Computer Inc Unknown device 0400 Flags: bus master, medium devsel, latency 0, IRQ 18 Memory at fbeda000 (32-bit, non-prefetchable) [size=1K] Capabilities: [50] Power Management version 2 Capabilities: [58] Debug port Capabilities: [98] #13 [0306] 00:1d.0 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #1 (prog-if 00 [UHCI]) Subsystem: Super Micro Computer Inc Unknown device 0400 Flags: bus master, medium devsel, latency 0, IRQ 23 I/O ports at 1800 [size=32] Capabilities: [50] #13 [0306] 00:1d.1 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #2 (prog-if 00 [UHCI]) Subsystem: Super Micro Computer Inc Unknown device 0400 Flags: bus master, medium devsel, latency 0, IRQ 19 I/O ports at 1480 [size=32] Capabilities: [50] #13 [0306] 00:1d.2 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #3 (prog-if 00 [UHCI]) Subsystem: Super Micro Computer Inc Unknown device 0400 Flags: bus master, medium devsel, latency 0, IRQ 18 I/O ports at 1400 [size=32] Capabilities: [50] #13 [0306] 00:1d.7 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB2 EHCI Controller #1 (prog-if 20 [EHCI]) Subsystem: Super Micro Computer Inc Unknown device 0400 Flags: bus master, medium devsel, latency 0, IRQ 23 Memory at fbed8000 (32-bit, non-prefetchable) [size=1K] Capabilities: [50] Power Management version 2 Capabilities: [58] Debug port Capabilities: [98] #13 [0306] 00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 90) (prog-if 01 [Subtractive decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=09, subordinate=09, sec-latency=32 Memory behind bridge: faf00000-fb7fffff Prefetchable memory behind bridge: 00000000f7000000-00000000f7f00000 Capabilities: [50] #0d [0000] 00:1f.0 ISA bridge: Intel Corporation 82801JIR (ICH10R) LPC Interface Controller Subsystem: Super Micro Computer Inc Unknown device 0400 Flags: bus master, medium devsel, latency 0 Capabilities: [e0] Vendor Specific Information 00:1f.2 SATA controller: Intel Corporation 82801JI (ICH10 Family) SATA AHCI Controller (prog-if 01 [AHCI 1.0]) Subsystem: Super Micro Computer Inc Unknown device 0400 Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 93 I/O ports at 0400 [size=8] I/O ports at 1080 [size=4] I/O ports at 1000 [size=8] I/O ports at 0c00 [size=4] I/O ports at 0880 [size=32] Memory at fbed6000 (32-bit, non-prefetchable) [size=2K] Capabilities: [80] Message Signalled Interrupts: 64bit- Queue=0/4 Enable+ Capabilities: [70] Power Management version 3 Capabilities: [a8] #12 [0010] Capabilities: [b0] #13 [0306] 00:1f.3 SMBus: Intel Corporation 82801JI (ICH10 Family) SMBus Controller Subsystem: Super Micro Computer Inc Unknown device 0400 Flags: medium devsel, IRQ 18 Memory at fbed4000 (64-bit, non-prefetchable) [size=256] I/O ports at 1020 [size=32] 01:00.0 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01) Subsystem: Super Micro Computer Inc Unknown device 10c9 Flags: bus master, fast devsel, latency 0, IRQ 28 Memory at fbce0000 (32-bit, non-prefetchable) [size=128K] Memory at fbcc0000 (32-bit, non-prefetchable) [size=128K] I/O ports at 3c00 [size=32] Memory at fbc9c000 (32-bit, non-prefetchable) [size=16K] Expansion ROM at fbca0000 [disabled] [size=128K] Capabilities: [40] Power Management version 3 Capabilities: [50] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable- Capabilities: [70] MSI-X: Enable+ Mask- TabSize=10 Capabilities: [a0] Express Endpoint IRQ 0 01:00.1 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01) Subsystem: Super Micro Computer Inc Unknown device 10c9 Flags: bus master, fast devsel, latency 0, IRQ 40 Memory at fbc60000 (32-bit, non-prefetchable) [size=128K] Memory at fbc40000 (32-bit, non-prefetchable) [size=128K] I/O ports at 3880 [size=32] Memory at fbc1c000 (32-bit, non-prefetchable) [size=16K] Expansion ROM at fbc20000 [disabled] [size=128K] Capabilities: [40] Power Management version 3 Capabilities: [50] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable- Capabilities: [70] MSI-X: Enable+ Mask- TabSize=10 Capabilities: [a0] Express Endpoint IRQ 0 02:00.0 PCI bridge: Integrated Device Technology, Inc. PES12N3A PCI Express Switch (rev 0e) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=02, secondary=03, subordinate=05, sec-latency=0 I/O behind bridge: 00004000-00005fff Memory behind bridge: f8f00000-fabfffff Capabilities: [40] Express Upstream Port IRQ 0 Capabilities: [c0] Power Management version 3 03:02.0 PCI bridge: Integrated Device Technology, Inc. PES12N3A PCI Express Switch (rev 0e) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=03, secondary=04, subordinate=04, sec-latency=0 I/O behind bridge: 00004000-00004fff Memory behind bridge: f8f00000-f9bfffff Capabilities: [40] Express Downstream Port (Slot-) IRQ 0 Capabilities: [c0] Power Management version 3 Capabilities: [d0] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable+ 03:04.0 PCI bridge: Integrated Device Technology, Inc. PES12N3A PCI Express Switch (rev 0e) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=03, secondary=05, subordinate=05, sec-latency=0 I/O behind bridge: 00005000-00005fff Memory behind bridge: f9f00000-fabfffff Capabilities: [40] Express Downstream Port (Slot-) IRQ 0 Capabilities: [c0] Power Management version 3 Capabilities: [d0] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable+ 04:00.0 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01) Subsystem: Intel Corporation Gigabit ET Quad Port Server Adapter Flags: bus master, fast devsel, latency 0, IRQ 35 Memory at f97e0000 (32-bit, non-prefetchable) [size=128K] Memory at f9800000 (32-bit, non-prefetchable) [size=4M] I/O ports at 4c00 [size=32] Memory at f97dc000 (32-bit, non-prefetchable) [size=16K] Capabilities: [40] Power Management version 3 Capabilities: [50] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable- Capabilities: [70] MSI-X: Enable+ Mask- TabSize=10 Capabilities: [a0] Express Endpoint IRQ 0 04:00.1 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01) Subsystem: Intel Corporation Gigabit ET Quad Port Server Adapter Flags: bus master, fast devsel, latency 0, IRQ 36 Memory at f8fe0000 (32-bit, non-prefetchable) [size=128K] Memory at f9000000 (32-bit, non-prefetchable) [size=4M] I/O ports at 4880 [size=32] Memory at f8fdc000 (32-bit, non-prefetchable) [size=16K] Capabilities: [40] Power Management version 3 Capabilities: [50] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable- Capabilities: [70] MSI-X: Enable+ Mask- TabSize=10 Capabilities: [a0] Express Endpoint IRQ 0 05:00.0 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01) Subsystem: Intel Corporation Gigabit ET Quad Port Server Adapter Flags: bus master, fast devsel, latency 0, IRQ 24 Memory at fa7e0000 (32-bit, non-prefetchable) [size=128K] Memory at fa800000 (32-bit, non-prefetchable) [size=4M] I/O ports at 5c00 [size=32] Memory at fa7dc000 (32-bit, non-prefetchable) [size=16K] Capabilities: [40] Power Management version 3 Capabilities: [50] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable- Capabilities: [70] MSI-X: Enable+ Mask- TabSize=10 Capabilities: [a0] Express Endpoint IRQ 0 05:00.1 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01) Subsystem: Intel Corporation Gigabit ET Quad Port Server Adapter Flags: bus master, fast devsel, latency 0, IRQ 34 Memory at f9fe0000 (32-bit, non-prefetchable) [size=128K] Memory at fa000000 (32-bit, non-prefetchable) [size=4M] I/O ports at 5880 [size=32] Memory at f9fdc000 (32-bit, non-prefetchable) [size=16K] Capabilities: [40] Power Management version 3 Capabilities: [50] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable- Capabilities: [70] MSI-X: Enable+ Mask- TabSize=10 Capabilities: [a0] Express Endpoint IRQ 0 07:00.0 RAID bus controller: 3ware Inc 9650SE SATA-II RAID PCIe (rev 01) Subsystem: 3ware Inc 9650SE SATA-II RAID PCIe Flags: bus master, fast devsel, latency 0, IRQ 30 Memory at f4000000 (64-bit, prefetchable) [size=32M] Memory at fbdde000 (64-bit, non-prefetchable) [size=4K] I/O ports at 6800 [size=256] Expansion ROM at fbde0000 [disabled] [size=128K] Capabilities: [40] Power Management version 2 Capabilities: [50] Message Signalled Interrupts: 64bit+ Queue=0/5 Enable- Capabilities: [70] Express Legacy Endpoint IRQ 0 09:04.0 VGA compatible controller: Matrox Graphics, Inc. MGA G200eW WPCM450 (rev 0a) (prog-if 00 [VGA controller]) Subsystem: Super Micro Computer Inc Unknown device 0400 Flags: bus master, medium devsel, latency 64, IRQ 10 Memory at f7000000 (32-bit, prefetchable) [size=16M] Memory at faffc000 (32-bit, non-prefetchable) [size=16K] Memory at fb000000 (32-bit, non-prefetchable) [size=8M] Capabilities: [dc] Power Management version 1 80:00.0 PCI bridge: Intel Corporation 5500 Non-Legacy I/O Hub PCI Express Root Port 0 (rev 13) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=80, secondary=81, subordinate=81, sec-latency=0 Capabilities: [40] #0d [0000] Capabilities: [60] Message Signalled Interrupts: 64bit- Queue=0/1 Enable+ Capabilities: [90] Express Root Port (Slot-) IRQ 0 Capabilities: [e0] Power Management version 3 80:01.0 PCI bridge: Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port 1 (rev 13) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=80, secondary=82, subordinate=82, sec-latency=0 Capabilities: [40] #0d [0000] Capabilities: [60] Message Signalled Interrupts: 64bit- Queue=0/1 Enable+ Capabilities: [90] Express Root Port (Slot+) IRQ 0 Capabilities: [e0] Power Management version 3 80:03.0 PCI bridge: Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port 3 (rev 13) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=80, secondary=83, subordinate=86, sec-latency=0 I/O behind bridge: 00007000-00008fff Memory behind bridge: dc300000-ddffffff Capabilities: [40] #0d [0000] Capabilities: [60] Message Signalled Interrupts: 64bit- Queue=0/1 Enable+ Capabilities: [90] Express Root Port (Slot+) IRQ 0 Capabilities: [e0] Power Management version 3 80:05.0 PCI bridge: Intel Corporation 5520/X58 I/O Hub PCI Express Root Port 5 (rev 13) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=80, secondary=87, subordinate=8a, sec-latency=0 I/O behind bridge: 00009000-0000afff Memory behind bridge: de300000-dfffffff Capabilities: [40] #0d [0000] Capabilities: [60] Message Signalled Interrupts: 64bit- Queue=0/1 Enable+ Capabilities: [90] Express Root Port (Slot+) IRQ 0 Capabilities: [e0] Power Management version 3 80:07.0 PCI bridge: Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port 7 (rev 13) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=80, secondary=8b, subordinate=8e, sec-latency=0 I/O behind bridge: 0000b000-0000cfff Memory behind bridge: f0300000-f1ffffff Capabilities: [40] #0d [0000] Capabilities: [60] Message Signalled Interrupts: 64bit- Queue=0/1 Enable+ Capabilities: [90] Express Root Port (Slot+) IRQ 0 Capabilities: [e0] Power Management version 3 80:09.0 PCI bridge: Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port 9 (rev 13) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=80, secondary=8f, subordinate=92, sec-latency=0 I/O behind bridge: 0000d000-0000efff Memory behind bridge: f2300000-f3ffffff Capabilities: [40] #0d [0000] Capabilities: [60] Message Signalled Interrupts: 64bit- Queue=0/1 Enable+ Capabilities: [90] Express Root Port (Slot+) IRQ 0 Capabilities: [e0] Power Management version 3 80:13.0 PIC: Intel Corporation 5520/5500/X58 I/O Hub I/OxAPIC Interrupt Controller (rev 13) (prog-if 20 [IO(X)-APIC]) Flags: bus master, fast devsel, latency 0 Memory at fec9a000 (32-bit, non-prefetchable) [size=4K] Capabilities: [6c] Power Management version 3 80:14.0 PIC: Intel Corporation 5520/5500/X58 I/O Hub System Management Registers (rev 13) (prog-if 00 [8259]) Flags: fast devsel Capabilities: [40] Express Unknown type IRQ 0 80:14.1 PIC: Intel Corporation 5520/5500/X58 I/O Hub GPIO and Scratch Pad Registers (rev 13) (prog-if 00 [8259]) Flags: fast devsel Capabilities: [40] Express Unknown type IRQ 0 80:14.2 PIC: Intel Corporation 5520/5500/X58 I/O Hub Control Status and RAS Registers (rev 13) (prog-if 00 [8259]) Flags: fast devsel Capabilities: [40] Express Unknown type IRQ 0 80:14.3 PIC: Intel Corporation 5520/5500/X58 I/O Hub Throttle Registers (rev 13) (prog-if 00 [8259]) Flags: fast devsel 80:16.0 System peripheral: Intel Corporation 5520/5500/X58 Chipset QuickData Technology Device (rev 13) Subsystem: Super Micro Computer Inc Unknown device 0400 Flags: bus master, fast devsel, latency 0, IRQ 10 Memory at f22fc000 (64-bit, non-prefetchable) [size=16K] Capabilities: [80] MSI-X: Enable- Mask- TabSize=1 Capabilities: [90] Express Unknown type IRQ 0 Capabilities: [e0] Power Management version 3 80:16.1 System peripheral: Intel Corporation 5520/5500/X58 Chipset QuickData Technology Device (rev 13) Subsystem: Super Micro Computer Inc Unknown device 0400 Flags: bus master, fast devsel, latency 0, IRQ 15 Memory at f22f8000 (64-bit, non-prefetchable) [size=16K] Capabilities: [80] MSI-X: Enable- Mask- TabSize=1 Capabilities: [90] Express Unknown type IRQ 0 Capabilities: [e0] Power Management version 3 80:16.2 System peripheral: Intel Corporation 5520/5500/X58 Chipset QuickData Technology Device (rev 13) Subsystem: Super Micro Computer Inc Unknown device 0400 Flags: bus master, fast devsel, latency 0, IRQ 14 Memory at f22f4000 (64-bit, non-prefetchable) [size=16K] Capabilities: [80] MSI-X: Enable- Mask- TabSize=1 Capabilities: [90] Express Unknown type IRQ 0 Capabilities: [e0] Power Management version 3 80:16.3 System peripheral: Intel Corporation 5520/5500/X58 Chipset QuickData Technology Device (rev 13) Subsystem: Super Micro Computer Inc Unknown device 0400 Flags: bus master, fast devsel, latency 0, IRQ 11 Memory at f22f0000 (64-bit, non-prefetchable) [size=16K] Capabilities: [80] MSI-X: Enable- Mask- TabSize=1 Capabilities: [90] Express Unknown type IRQ 0 Capabilities: [e0] Power Management version 3 80:16.4 System peripheral: Intel Corporation 5520/5500/X58 Chipset QuickData Technology Device (rev 13) Subsystem: Super Micro Computer Inc Unknown device 0400 Flags: bus master, fast devsel, latency 0, IRQ 10 Memory at f22ec000 (64-bit, non-prefetchable) [size=16K] Capabilities: [80] MSI-X: Enable- Mask- TabSize=1 Capabilities: [90] Express Unknown type IRQ 0 Capabilities: [e0] Power Management version 3 80:16.5 System peripheral: Intel Corporation 5520/5500/X58 Chipset QuickData Technology Device (rev 13) Subsystem: Super Micro Computer Inc Unknown device 0400 Flags: bus master, fast devsel, latency 0, IRQ 15 Memory at f22e8000 (64-bit, non-prefetchable) [size=16K] Capabilities: [80] MSI-X: Enable- Mask- TabSize=1 Capabilities: [90] Express Unknown type IRQ 0 Capabilities: [e0] Power Management version 3 80:16.6 System peripheral: Intel Corporation 5520/5500/X58 Chipset QuickData Technology Device (rev 13) Subsystem: Super Micro Computer Inc Unknown device 0400 Flags: bus master, fast devsel, latency 0, IRQ 14 Memory at f22e4000 (64-bit, non-prefetchable) [size=16K] Capabilities: [80] MSI-X: Enable- Mask- TabSize=1 Capabilities: [90] Express Unknown type IRQ 0 Capabilities: [e0] Power Management version 3 80:16.7 System peripheral: Intel Corporation 5520/5500/X58 Chipset QuickData Technology Device (rev 13) Subsystem: Super Micro Computer Inc Unknown device 0400 Flags: bus master, fast devsel, latency 0, IRQ 11 Memory at f22e0000 (64-bit, non-prefetchable) [size=16K] Capabilities: [80] MSI-X: Enable- Mask- TabSize=1 Capabilities: [90] Express Unknown type IRQ 0 Capabilities: [e0] Power Management version 3 83:00.0 PCI bridge: Integrated Device Technology, Inc. PES12N3A PCI Express Switch (rev 0e) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=83, secondary=84, subordinate=86, sec-latency=0 I/O behind bridge: 00007000-00008fff Memory behind bridge: dc300000-ddffffff Capabilities: [40] Express Upstream Port IRQ 0 Capabilities: [c0] Power Management version 3 84:02.0 PCI bridge: Integrated Device Technology, Inc. PES12N3A PCI Express Switch (rev 0e) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=84, secondary=85, subordinate=85, sec-latency=0 I/O behind bridge: 00007000-00007fff Memory behind bridge: dc300000-dcffffff Capabilities: [40] Express Downstream Port (Slot-) IRQ 0 Capabilities: [c0] Power Management version 3 Capabilities: [d0] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable+ 84:04.0 PCI bridge: Integrated Device Technology, Inc. PES12N3A PCI Express Switch (rev 0e) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=84, secondary=86, subordinate=86, sec-latency=0 I/O behind bridge: 00008000-00008fff Memory behind bridge: dd300000-ddffffff Capabilities: [40] Express Downstream Port (Slot-) IRQ 0 Capabilities: [c0] Power Management version 3 Capabilities: [d0] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable+ 85:00.0 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01) Subsystem: Intel Corporation Gigabit ET Quad Port Server Adapter Flags: bus master, fast devsel, latency 0, IRQ 59 Memory at dcbe0000 (32-bit, non-prefetchable) [size=128K] Memory at dcc00000 (32-bit, non-prefetchable) [size=4M] I/O ports at 7c00 [size=32] Memory at dcbdc000 (32-bit, non-prefetchable) [size=16K] Capabilities: [40] Power Management version 3 Capabilities: [50] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable- Capabilities: [70] MSI-X: Enable+ Mask- TabSize=10 Capabilities: [a0] Express Endpoint IRQ 0 85:00.1 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01) Subsystem: Intel Corporation Gigabit ET Quad Port Server Adapter Flags: bus master, fast devsel, latency 0, IRQ 60 Memory at dc3e0000 (32-bit, non-prefetchable) [size=128K] Memory at dc400000 (32-bit, non-prefetchable) [size=4M] I/O ports at 7880 [size=32] Memory at dc3dc000 (32-bit, non-prefetchable) [size=16K] Capabilities: [40] Power Management version 3 Capabilities: [50] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable- Capabilities: [70] MSI-X: Enable+ Mask- TabSize=10 Capabilities: [a0] Express Endpoint IRQ 0 86:00.0 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01) Subsystem: Intel Corporation Gigabit ET Quad Port Server Adapter Flags: bus master, fast devsel, latency 0, IRQ 48 Memory at ddbe0000 (32-bit, non-prefetchable) [size=128K] Memory at ddc00000 (32-bit, non-prefetchable) [size=4M] I/O ports at 8c00 [size=32] Memory at ddbdc000 (32-bit, non-prefetchable) [size=16K] Capabilities: [40] Power Management version 3 Capabilities: [50] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable- Capabilities: [70] MSI-X: Enable+ Mask- TabSize=10 Capabilities: [a0] Express Endpoint IRQ 0 86:00.1 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01) Subsystem: Intel Corporation Gigabit ET Quad Port Server Adapter Flags: bus master, fast devsel, latency 0, IRQ 58 Memory at dd3e0000 (32-bit, non-prefetchable) [size=128K] Memory at dd400000 (32-bit, non-prefetchable) [size=4M] I/O ports at 8880 [size=32] Memory at dd3dc000 (32-bit, non-prefetchable) [size=16K] Capabilities: [40] Power Management version 3 Capabilities: [50] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable- Capabilities: [70] MSI-X: Enable+ Mask- TabSize=10 Capabilities: [a0] Express Endpoint IRQ 0 87:00.0 PCI bridge: Integrated Device Technology, Inc. PES12N3A PCI Express Switch (rev 0e) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=87, secondary=88, subordinate=8a, sec-latency=0 I/O behind bridge: 00009000-0000afff Memory behind bridge: de300000-dfffffff Capabilities: [40] Express Upstream Port IRQ 0 Capabilities: [c0] Power Management version 3 88:02.0 PCI bridge: Integrated Device Technology, Inc. PES12N3A PCI Express Switch (rev 0e) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=88, secondary=89, subordinate=89, sec-latency=0 I/O behind bridge: 00009000-00009fff Memory behind bridge: de300000-deffffff Capabilities: [40] Express Downstream Port (Slot-) IRQ 0 Capabilities: [c0] Power Management version 3 Capabilities: [d0] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable+ 88:04.0 PCI bridge: Integrated Device Technology, Inc. PES12N3A PCI Express Switch (rev 0e) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=88, secondary=8a, subordinate=8a, sec-latency=0 I/O behind bridge: 0000a000-0000afff Memory behind bridge: df300000-dfffffff Capabilities: [40] Express Downstream Port (Slot-) IRQ 0 Capabilities: [c0] Power Management version 3 Capabilities: [d0] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable+ 89:00.0 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01) Subsystem: Intel Corporation Gigabit ET Quad Port Server Adapter Flags: bus master, fast devsel, latency 0, IRQ 51 Memory at debe0000 (32-bit, non-prefetchable) [size=128K] Memory at dec00000 (32-bit, non-prefetchable) [size=4M] I/O ports at 9c00 [size=32] Memory at debdc000 (32-bit, non-prefetchable) [size=16K] Capabilities: [40] Power Management version 3 Capabilities: [50] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable- Capabilities: [70] MSI-X: Enable+ Mask- TabSize=10 Capabilities: [a0] Express Endpoint IRQ 0 89:00.1 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01) Subsystem: Intel Corporation Gigabit ET Quad Port Server Adapter Flags: bus master, fast devsel, latency 0, IRQ 53 Memory at de3e0000 (32-bit, non-prefetchable) [size=128K] Memory at de400000 (32-bit, non-prefetchable) [size=4M] I/O ports at 9880 [size=32] Memory at de3dc000 (32-bit, non-prefetchable) [size=16K] Capabilities: [40] Power Management version 3 Capabilities: [50] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable- Capabilities: [70] MSI-X: Enable+ Mask- TabSize=10 Capabilities: [a0] Express Endpoint IRQ 0 8a:00.0 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01) Subsystem: Intel Corporation Gigabit ET Quad Port Server Adapter Flags: bus master, fast devsel, latency 0, IRQ 50 Memory at dfbe0000 (32-bit, non-prefetchable) [size=128K] Memory at dfc00000 (32-bit, non-prefetchable) [size=4M] I/O ports at ac00 [size=32] Memory at dfbdc000 (32-bit, non-prefetchable) [size=16K] Capabilities: [40] Power Management version 3 Capabilities: [50] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable- Capabilities: [70] MSI-X: Enable+ Mask- TabSize=10 Capabilities: [a0] Express Endpoint IRQ 0 8a:00.1 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01) Subsystem: Intel Corporation Gigabit ET Quad Port Server Adapter Flags: bus master, fast devsel, latency 0, IRQ 49 Memory at df3e0000 (32-bit, non-prefetchable) [size=128K] Memory at df400000 (32-bit, non-prefetchable) [size=4M] I/O ports at a880 [size=32] Memory at df3dc000 (32-bit, non-prefetchable) [size=16K] Capabilities: [40] Power Management version 3 Capabilities: [50] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable- Capabilities: [70] MSI-X: Enable+ Mask- TabSize=10 Capabilities: [a0] Express Endpoint IRQ 0 8b:00.0 PCI bridge: Integrated Device Technology, Inc. PES12N3A PCI Express Switch (rev 0e) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=8b, secondary=8c, subordinate=8e, sec-latency=0 I/O behind bridge: 0000b000-0000cfff Memory behind bridge: f0300000-f1ffffff Capabilities: [40] Express Upstream Port IRQ 0 Capabilities: [c0] Power Management version 3 8c:02.0 PCI bridge: Integrated Device Technology, Inc. PES12N3A PCI Express Switch (rev 0e) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=8c, secondary=8d, subordinate=8d, sec-latency=0 I/O behind bridge: 0000b000-0000bfff Memory behind bridge: f0300000-f0ffffff Capabilities: [40] Express Downstream Port (Slot-) IRQ 0 Capabilities: [c0] Power Management version 3 Capabilities: [d0] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable+ 8c:04.0 PCI bridge: Integrated Device Technology, Inc. PES12N3A PCI Express Switch (rev 0e) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=8c, secondary=8e, subordinate=8e, sec-latency=0 I/O behind bridge: 0000c000-0000cfff Memory behind bridge: f1300000-f1ffffff Capabilities: [40] Express Downstream Port (Slot-) IRQ 0 Capabilities: [c0] Power Management version 3 Capabilities: [d0] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable+ 8d:00.0 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01) Subsystem: Intel Corporation Gigabit ET Quad Port Server Adapter Flags: bus master, fast devsel, latency 0, IRQ 63 Memory at f0be0000 (32-bit, non-prefetchable) [size=128K] Memory at f0c00000 (32-bit, non-prefetchable) [size=4M] I/O ports at bc00 [size=32] Memory at f0bdc000 (32-bit, non-prefetchable) [size=16K] Capabilities: [40] Power Management version 3 Capabilities: [50] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable- Capabilities: [70] MSI-X: Enable+ Mask- TabSize=10 Capabilities: [a0] Express Endpoint IRQ 0 8d:00.1 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01) Subsystem: Intel Corporation Gigabit ET Quad Port Server Adapter Flags: bus master, fast devsel, latency 0, IRQ 62 Memory at f03e0000 (32-bit, non-prefetchable) [size=128K] Memory at f0400000 (32-bit, non-prefetchable) [size=4M] I/O ports at b880 [size=32] Memory at f03dc000 (32-bit, non-prefetchable) [size=16K] Capabilities: [40] Power Management version 3 Capabilities: [50] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable- Capabilities: [70] MSI-X: Enable+ Mask- TabSize=10 Capabilities: [a0] Express Endpoint IRQ 0 8e:00.0 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01) Subsystem: Intel Corporation Gigabit ET Quad Port Server Adapter Flags: bus master, fast devsel, latency 0, IRQ 54 Memory at f1be0000 (32-bit, non-prefetchable) [size=128K] Memory at f1c00000 (32-bit, non-prefetchable) [size=4M] I/O ports at cc00 [size=32] Memory at f1bdc000 (32-bit, non-prefetchable) [size=16K] Capabilities: [40] Power Management version 3 Capabilities: [50] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable- Capabilities: [70] MSI-X: Enable+ Mask- TabSize=10 Capabilities: [a0] Express Endpoint IRQ 0 8e:00.1 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01) Subsystem: Intel Corporation Gigabit ET Quad Port Server Adapter Flags: bus master, fast devsel, latency 0, IRQ 61 Memory at f13e0000 (32-bit, non-prefetchable) [size=128K] Memory at f1400000 (32-bit, non-prefetchable) [size=4M] I/O ports at c880 [size=32] Memory at f13dc000 (32-bit, non-prefetchable) [size=16K] Capabilities: [40] Power Management version 3 Capabilities: [50] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable- Capabilities: [70] MSI-X: Enable+ Mask- TabSize=10 Capabilities: [a0] Express Endpoint IRQ 0 8f:00.0 PCI bridge: Integrated Device Technology, Inc. PES12N3A PCI Express Switch (rev 0e) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=8f, secondary=90, subordinate=92, sec-latency=0 I/O behind bridge: 0000d000-0000efff Memory behind bridge: f2300000-f3ffffff Capabilities: [40] Express Upstream Port IRQ 0 Capabilities: [c0] Power Management version 3 90:02.0 PCI bridge: Integrated Device Technology, Inc. PES12N3A PCI Express Switch (rev 0e) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=90, secondary=91, subordinate=91, sec-latency=0 I/O behind bridge: 0000d000-0000dfff Memory behind bridge: f2300000-f2ffffff Capabilities: [40] Express Downstream Port (Slot-) IRQ 0 Capabilities: [c0] Power Management version 3 Capabilities: [d0] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable+ 90:04.0 PCI bridge: Integrated Device Technology, Inc. PES12N3A PCI Express Switch (rev 0e) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=90, secondary=92, subordinate=92, sec-latency=0 I/O behind bridge: 0000e000-0000efff Memory behind bridge: f3300000-f3ffffff Capabilities: [40] Express Downstream Port (Slot-) IRQ 0 Capabilities: [c0] Power Management version 3 Capabilities: [d0] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable+ 91:00.0 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01) Subsystem: Intel Corporation Gigabit ET Quad Port Server Adapter Flags: bus master, fast devsel, latency 0, IRQ 71 Memory at f2be0000 (32-bit, non-prefetchable) [size=128K] Memory at f2c00000 (32-bit, non-prefetchable) [size=4M] I/O ports at dc00 [size=32] Memory at f2bdc000 (32-bit, non-prefetchable) [size=16K] Capabilities: [40] Power Management version 3 Capabilities: [50] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable- Capabilities: [70] MSI-X: Enable+ Mask- TabSize=10 Capabilities: [a0] Express Endpoint IRQ 0 91:00.1 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01) Subsystem: Intel Corporation Gigabit ET Quad Port Server Adapter Flags: bus master, fast devsel, latency 0, IRQ 65 Memory at f23e0000 (32-bit, non-prefetchable) [size=128K] Memory at f2400000 (32-bit, non-prefetchable) [size=4M] I/O ports at d880 [size=32] Memory at f23dc000 (32-bit, non-prefetchable) [size=16K] Capabilities: [40] Power Management version 3 Capabilities: [50] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable- Capabilities: [70] MSI-X: Enable+ Mask- TabSize=10 Capabilities: [a0] Express Endpoint IRQ 0 92:00.0 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01) Subsystem: Intel Corporation Gigabit ET Quad Port Server Adapter Flags: bus master, fast devsel, latency 0, IRQ 56 Memory at f3be0000 (32-bit, non-prefetchable) [size=128K] Memory at f3c00000 (32-bit, non-prefetchable) [size=4M] I/O ports at ec00 [size=32] Memory at f3bdc000 (32-bit, non-prefetchable) [size=16K] Capabilities: [40] Power Management version 3 Capabilities: [50] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable- Capabilities: [70] MSI-X: Enable+ Mask- TabSize=10 Capabilities: [a0] Express Endpoint IRQ 0 92:00.1 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01) Subsystem: Intel Corporation Gigabit ET Quad Port Server Adapter Flags: bus master, fast devsel, latency 0, IRQ 66 Memory at f33e0000 (32-bit, non-prefetchable) [size=128K] Memory at f3400000 (32-bit, non-prefetchable) [size=4M] I/O ports at e880 [size=32] Memory at f33dc000 (32-bit, non-prefetchable) [size=16K] Capabilities: [40] Power Management version 3 Capabilities: [50] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable- Capabilities: [70] MSI-X: Enable+ Mask- TabSize=10 Capabilities: [a0] Express Endpoint IRQ 0 </lspci -v> On Wed, Dec 23, 2009 at 1:44 PM, Scott Silverman < ssilver...@simplexinvestments.com> wrote: > I would like to add a few things to my post: > > First, I noticed this issue both when routing through the box or when > running an iperf with the tcp endpoint as the box itself. > > Second, It seems that GRO was not an option/enabled (at least as far as I > can tell from ethtool -k) until driver 2.1.1, I have other boxes running > 2.0.6 and do not see any GRO in the ethtool -k output. I looked back through > the release notes and didn't see anything about gro at all. > > Thanks, > Scott Silverman > > > On Wed, Dec 23, 2009 at 1:08 PM, Scott Silverman < > ssilver...@simplexinvestments.com> wrote: > >> I have experienced an issue that I believe lies with the GRO >> implementation in IGB 2.1.1. >> >> The problem I see is that when GRO is enabled, TCP connections through the >> router are limited to approximately 300-500 kbps. If I disable GRO, I can >> get the full expected throughput. Regardless of offload settings, UDP >> connections are able to utilize the full expected bandwidth. >> >> I initially suspected that a firewall, or trafficshaping, issue was >> causing this problem, but ruled those out. Later, dumps of traffic turned up >> the fact that the machine believed it was receiving oversized (~2000 byte) >> packets, which led us to investigate the offload settings. >> >> The router device in question is based on the Intel 5520 Chipset, and is >> running kernel 2.6.29.6 (from kernel.org). I am using the igb 2.1.1 >> driver from intel.com. The card in question is an Intel Gigabit ET Quad >> Port, though I also see the issue on a LOM 82576 based NIC in the same box. >> >> Please let me know if there are any other details or information that >> might be of use in tracking this down. >> >> Thanks, >> Scott Silverman >> >> > ------------------------------------------------------------------------------ This SF.Net email is sponsored by the Verizon Developer Community Take advantage of Verizon's best-in-class app development support A streamlined, 14 day to market process makes app distribution fast and easy Join now and get one step closer to millions of Verizon customers http://p.sf.net/sfu/verizon-dev2dev _______________________________________________ E1000-devel mailing list E1000-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/e1000-devel
